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JAMES GRANGE'R, OFZAN'ESVILLE, OHIO.

i Letters .Patent No. 82,516, dated September 29, 1868.

IMPROVEMENT IN PROPELLING-APPARATUS.

@its rlgehnle namhtn im time ssrt'ttmt mit making ,tart nf tige stmt.

'IO-.ALLA WHOM IT MAY CONCERN Be it known that I, JAMES GRANGER, ofZanesville, inthe county of Muskingum, and State of Ohio, have inventeda new and useful Improvement in Steamboat Paddle-Wheels; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable those skilled in the art to make and use thesame, reference being. had to the accompanying dra-wings, forming partof this'specication.

This invention relates to an improvement on a steamboatpropelling-wheel,for'which wheel I have already secured Letters Patentof the United States; and the invention consists in providing atravelling-bridge for the chain to which the buckets are attached, whichshall prevent the chain from sagging, and otherwise support and keep thechain in place. y Y l i Figure l represents the wheel, constructedaccording to my present patent, it being a side elevation, showing thepropelling-shafts, and the method of rotating the wheel. f

Figure 2 is a vertical longitudinal section of the chain, with mytravelling-bridge applied, showing the manner of its connection iviththe links, the section being through the line a: a; of g.

Figure 3 is a top vien' of the chain.

Similar letters of reference indicate corresponding parts.

In the wheel, as shown in g. 1 there is no particular provision 'madefor preventing the chain from sagging, there being no bridgesufficiently lengthy for that purpose. l

A is the improved bridge, which is designed to cover any suitable numberof the links B, (which are seen in fig. 2 in dotted lines,) and on theoutside in iig. 3.

C represents two series .of conneetinglplates, to which the links, aswellvas the arms-of the buckets, are attachedf Y Y v v It will be s'eenthat the bridge A is placed betiveen these series of plates, anditsacton isrsuchithat when the chain is elongated so asV to bring thegreatest desirable number of buckets into use at one and the same time,the bridge will support the chain and keep it in place.

The lugs on the driving-wheel operate against the plates C when thewheel is in motiointhe same as shown in fig. 1. Y

A I claim as new, and desire to secure by Letters Patent-'- Thetravelling-bridge A, constructed substantially as shown and described,in combination with a chain ro ellin -wheel and for the ur oses setforth. e P p 'g P( p Y JAMES cannone..-

Witnesses':

' Moses M. GRANGER,

GILBERT D. 'Munson

